evart has the best technical stuff along with indian river. twin lake has a nice loop of single track.i live a few miles from the big o.the whole thing is pretty fast now.they actually groom it. st helen rose city area is fun. a bunch of different motocross tracks to ride if you know where there at. kalkaska travers area is ok. the tin cup and the lazerne trails are like highways. indian river is some of the best all around.tight technical loops and wide open areas.the township is all open so you can also ride into town. but a long drive for most.
a good central spot would be north of harrison. go to the old bridge.3 good loops and camping right there.